From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: julie Sullivan <kernelmail.jms@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: PROBLEM: 3.0-rc kernels unbootable since -rc3
Date: Sun, 10 Jul 2011 14:46:39 -0700 [thread overview]
Message-ID: <20110710214639.GP6014@linux.vnet.ibm.com> (raw)
In-Reply-To: <CAAVPGOPAx-oLZct9u2Kq3uQ4W2GwJFYUGgw3h=M_Y4_wv7b51w@mail.gmail.com>
On Sun, Jul 10, 2011 at 09:30:58PM +0100, julie Sullivan wrote:
> > But maybe not that much thought. My current guess is that your
> > configuration is somehow causing some RCU callbacks to be executed
> > during early boot, and that these callbacks are attempting to use kernel
> > features that are not yet initialized. If my guess is correct, then
> > the reason that enabling RCU_BOOST makes things work is that it prevents
> > RCU callbacks from executing until after the scheduler is up and running.
> >
> > So I added another commit to the jms.2011.07.07a branch in the -rcu
> > git tree. If my guesses are correct, this will allow your system to
> > boot, possibly emitting a warning on the way up. When you get a chance
> > to try this out, please let me know how it goes.
> >
> > Thanx, Paul
>
> Fantastic, now we boot perfectly!
> I also tried the same treatment on v3.0-rc5 and -rc6 (i.e. revert
> f8b7fc6b514f34a51875 and a46e0899eec7a3069bcad then add those
> 8 commits from the jms.2011.07.07a branch) with the same success.
>
> Thanks for giving me back 3.0-rc4, -rc5 and -rc6!
Very cool! Thank you very much for the testing -- I will put together an
upstreamable commit with your Tested-by.
Thanx, Paul
next prev parent reply other threads:[~2011-07-10 21:47 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-06 21:10 PROBLEM: 3.0-rc kernels unbootable since -rc3 julie Sullivan
2011-07-06 21:23 ` Paul E. McKenney
2011-07-07 19:31 ` Paul E. McKenney
2011-07-07 19:47 ` julie Sullivan
2011-07-07 19:58 ` Paul E. McKenney
2011-07-07 20:28 ` julie Sullivan
2011-07-07 20:47 ` julie Sullivan
2011-07-08 0:29 ` Paul E. McKenney
2011-07-09 10:09 ` Paul E. McKenney
2011-07-10 0:45 ` julie Sullivan
2011-07-10 3:25 ` Paul E. McKenney
2011-07-10 16:38 ` julie Sullivan
2011-07-10 17:16 ` Paul E. McKenney
2011-07-10 17:35 ` Paul E. McKenney
2011-07-10 20:30 ` julie Sullivan
2011-07-10 21:46 ` Paul E. McKenney [this message]
2011-07-10 21:50 ` julie Sullivan
2011-07-10 23:14 ` Paul E. McKenney
2011-07-11 16:24 ` Konrad Rzeszutek Wilk
2011-07-11 17:13 ` Paul E. McKenney
2011-07-11 19:30 ` Konrad Rzeszutek Wilk
2011-07-11 20:15 ` Paul E. McKenney
2011-07-11 21:09 ` Konrad Rzeszutek Wilk
2011-07-12 10:55 ` Paul E. McKenney
2011-07-12 14:12 ` Konrad Rzeszutek Wilk
2011-07-12 14:49 ` Paul E. McKenney
2011-07-12 15:07 ` Paul E. McKenney
2011-07-12 15:15 ` Paul E. McKenney
2011-07-12 15:22 ` Paul E. McKenney
2011-07-12 16:32 ` PROBLEM: 3.0-rc kernels unbootable since -rc3 - under Xen, 32-bit guest only Konrad Rzeszutek Wilk
2011-07-12 16:46 ` Paul E. McKenney
2011-07-12 16:03 ` PROBLEM: 3.0-rc kernels unbootable since -rc3 Konrad Rzeszutek Wilk
2011-07-12 16:39 ` Paul E. McKenney
2011-07-12 18:01 ` Konrad Rzeszutek Wilk
2011-07-12 18:59 ` Paul E. McKenney
2011-07-12 19:07 ` Konrad Rzeszutek Wilk
2011-07-12 20:52 ` Paul E. McKenney
2011-07-12 19:10 ` Peter Zijlstra
2011-07-12 19:57 ` Konrad Rzeszutek Wilk
2011-07-12 20:46 ` Paul E. McKenney
2011-07-12 21:04 ` Julie Sullivan
2011-07-12 21:07 ` Paul E. McKenney
2011-07-12 20:05 ` Paul E. McKenney
2011-07-12 6:33 ` [Xen-devel] " Sander Eikelenboom
2011-07-12 14:05 ` Paul E. McKenney
[not found] ` <CAAVPGOMSprJSkzziH6hJv9PweOONzsMaRZEK2ZSrV3xFBReTPw@mail.gmail.com>
[not found] ` <20110711214301.GP2245@linux.vnet.ibm.com>
2011-07-12 21:15 ` Julie Sullivan
2011-07-12 21:29 ` Paul E. McKenney
2011-07-12 21:35 ` Julie Sullivan
2011-07-12 21:49 ` Julie Sullivan
2011-07-12 22:00 ` Paul E. McKenney
2011-07-13 7:18 ` RKK
2011-07-13 15:47 ` Paul E. McKenney
2011-07-13 20:57 ` Julie Sullivan
2011-07-13 21:23 ` Paul E. McKenney
2011-07-07 17:28 ` julie Sullivan
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